Calender-roll grinder.



W. A. UNDERWUOD & J. ZIMMERMAN.

CALENDER ROLL GRINDER. APPLICATION FILED mmzs. l9l8.

J away-c06 5 Ja/z Ezra/arm W. A. UNDERWOOD & J. ZIMMERMAN.

CALENDER ROLL GRINDER. APPLICATION man 1AN.26. gels.

1,285,476, Patented Nov. 19, 1918.

3 SHEETSSHEET 2.

W. A. UNDERWOOD &-I. ZIMMERMAN.

CALENDER ROLL GRINDER. APPLICATION men Imzs; 191a.

Patentd Nov. 19, 1918.

3 SHEETSSHEET 3- fm/az or E 72 Mww 7077/3 ZZZ/22287292471 7 LLiJ NTTED WILLIAM A. UNDEBWOOD, or WORCESTER, AND Jolt-In ZIMMERMAN', OF AUBURN,

MASSACHUSETTS.

CALENDER-ROLL GRINDER.

Specification of Letters Patent.

Patented Nov. 19,1918.

To all whom it may concern:

Be it known that We, WILLIAM A. UNDER- wool) and JOHN ZIMMERMAN, citizens of the United States, residing at l/Vorcester and Auburn, respectively, in the county of Worcester and State of Massachusetts, have invented a new and useful Calender-Roll Grinder, of which the following is a specification.

This invention relates to an improvement in traverse grinding devices for calender rolls of the type represented in our Patent No. 1,255,360, granted February 5, 1918, on the copending application Serial No. 157,038 filed March 23, 1917. The objects of this invention are the same as the objects of that one and also to provide simple and convenient means for adjusting the bed or frame of the grinding device vertically, longitudinally and laterally, and effective means for supporting the same and permitting of these adjustments and clamping it in its adjusted positions. also includes one form of the invention shown in our above identified application but not specifically claimed therein and is, to that extent only a division thereof. Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Figure 1 is an end elevation of a calender with a preferred embodiment of this invention applied thereto;

Fig. 2 is an enlarged side elevation of the grinding device;

Fig. 3 is a rear view;

Fig. 4 is a plan of the supporting slide only;

Fig. 5 is a rear elevation of a modification constituting matter divided out of our above identified application;

Fig. 6 is a side view of the same, and

Fig. 7 is a sectional View on the line 7-7 of Fig. 5.

As in our first application above identified the invention is shown as applied to a calender having frame ends A and calender rolls B to be ground. The frame is provided with a series of bolt holes on its two opposite ends and two'brackets 10 are bolted thereto and leveled so as to support the apparatus.

The two brackets are provided with a This case cross bar 11 at the center of which is placed a large vertical adjusting screw 12 for regulating the elevation of the device and constituting a support for the whole grinding mechanism. This screw is provided with a spherical seat 13 for receiving a spherical bottom 14 on a base 15. The bolt 12 is provided with a conical passage 16 extending down through from the spherical seat and larger at the bottom than at the top. Through this passes a bolt 17 having a head 17 setting in a recess in the base 15. The bottom of the adjusting screw 12 is also provided With a spherical end and the bolt 17 has a Washer 18 having a spherical seat at the top fitting this end and held against it by a nut. This bolt and nut are used for clamping the parts in adjusted positions. M

It will be understood that the base 15 can be turned either sidewise or longitudinally and twisted or tilted in any desired direction .within certain limits in its spherical seat 14 and that the bolt and nut will clamp it in its adjusted position.

In addition to this the base 15 is provided with longitudinal ways which support a slide 20 adapted to be moved back and forth along said ways by an adjusting screw 21. A clamping bolt 22 is provided for holding this slide when once adjusted. This slide is provided with undercut ends 23 for receiving projections on the grinder bed or frame 24 and with a bolt 25 for clamping the same on the slide. This grinder bed is the same as the so-called frame 12 in our above identified application and carries the grinding mechanism comprising a feed screw 26, nut 27 operating handle 28, motor 29, grinding wheel shaft 30, and grinding .wheel 31. Any of the other associated parts illustrated inthat application can be employed in connection with these if desired. In this way it will be seen that in addition to the advantages set forth in our prior application universal adjustment of the grinding wheel can be secured and the parts fixed in adjusted position.

In the form shown in the last three figures, the device is mounted in any desired way but the frame 24 is provided with end uprights '42 which support a driving shaft 43. This driving shaft is operated from an externalsource of power by a belt on a pulley 44, thus eliminating the motor shown in the of. the shaft. 43 so that it will rotatewith that sliaftin all positions of the slide. Pivotally mounted on this slide concentric with the shaft 48 is a frame 48 having an in- 'wardly extending arm 49 bolted thereto.

The-slide is provided with a rotary worm 50 operated by a handle 51 and meshing with a segmental worm gear 52 fixed on the frame 48. By turning this worm 50 therefore, the

' arm 49 can 'be raised and lowered about the center of the shaft 43 as a pivot.

-The pulley 46 is adapted to transmit power by a belt to a pulley 53 on a shaft 54 carried by the arm 49 and carrying the grinding wheel 31. This device operates in a manner substantially the same as the other except that the power for driving the wheel is derived through the shaft 43 from an external source and the arm 49 can be set at different angles so as to'grind two calender rolls "from'one position of frame 24.

Although we have illustrated and described only two forms of the invention we are aware of the fact that other modifica tions can be made therein without departing from the scope of the invention as expressed in the claims. Therefore we do not wish to be limited to all the details of construction herein shown and described, but what we do claim is 2- 1'. In a portable calender roll grinder, the combination of asupport, a base mounted on said support and capable of being twisted sidewise and tilted thereon, means for clamping the base with respect to said support after adjustment, a grinding bed or frame carried by said base and provided with a grinding wheel, and means for operating said wheel in its adjusted positions.

2. In a portable calender roll grinder, the combination of a support adapted to be ap-' plied directly to the end housings of the calender at different elevations, a grinding bed or frame carried by said support and adj ustable vertically thereon and also adjustable about a pivot sidewise and longitudinally, an arm carried by said bed and adapted to project in between the housings of the calender frame, a shaft located at each end of said arm, a grindingwheel on one shaft, means A Copies of this patent may be obtained for for driving the other shaft and for transmitting the rotation to the grinding wheel shaft, a screw carried by said bed and connected with the arm, and means for rotating said screw to move the arm back and forth.

3. In a portable calender roll grinder, the combination of a support, a vertical screw carried by said support having a spherical seat at the top, a base having a portion fitting in said spherical seat and capable of twisting. and tilting thereon, means extending through said screw for holding the base in its adjusted positions, and a grinding bed carried by said base.

4. In a portable calender roll grinder, the combination of a. support, a vertical screw carried by said support having a spherical seat at the top, a base having a portion fi-tting in said spherical seat and capable of twisting and tilting thereon, means extending through said screw for holding the base in its adjusted positions, and a grinding bed carried by said base and longitudinally adjustable thereon.

5. In a portable calender roll grinder, the combination of a support adapted to be applied to the housings of a calender, a grinder bed carried by said support, an arm carried by said bed, a grinding wheel on the arm,

means supported by the bed for rotating the wheel, and means for adjusting said arm to swing about an axis parallel with the axis of the grinding wheel.

6; In a portable calender roll grinder, the combination of a support adapted to be applied directly to the end housings of the calender at different: elevations, a grinding bed or frame carried by said support and adjustable vertically thereon and also adjustable about a pivot sidewise and longitudinally, an arm carried by said bed and adapted to project in between the housings of the calender frame, a shaft located at each end of said arm, a grinding wheel on one shaft, and means for driving the other shaft and for transmitting the rotation to the grinding wheel shaft.

7. In a portable calender roll grinder, the combination of a support adapted to be applied directly to the end housings of the calender at different elevations, a grinding bed or frame carried by said supportand adjustable about a pivot sidewise, an armcarried by said bed and adapted to project in between the housings of the calender frame, a shaft located at each end of said arm, a grinding wheel on one shaft, and'means for driving the other shaft and for transmitting the rotation to the grinding wheel shaft.

In testimony whereof we havehereunto afiixed our signatures. 7

WILLIAM A. UNDERWOOD. JOHN ZIMMER-M'AN.

five cents each, by addressing the Commissioner of Patents;

Washington, D. G. I 

